I wasn't left... I guess I did the leaving!
When I was 3, my family and I were camping in Calgary near the river, and for whatever reason, I decided to walk from where we were (the park) to our camper (long walk, it was in a parking lot).
Needless to say, my family was hectically searching for me, and they even alerted the park guide/ranger/whatever that I was missing. They thought I had fallen into the river and drowned, lol. So my mom was all crying so my dad took her to the camper to calm her down, and the find little old me playing with some toys on the couch.
My mom has said I've caused her lot's of stress ever since I was born, perhaps she's right